#551581#551581

#551581 is a dark, vivid violet. Relative luminance 0.041; OKLCH L 36.5% C 0.166 H 306.2°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#551581
RGB	rgb(85, 21, 129)
HSL	hsl(276, 72%, 29%)
HSV	hsv(276, 84%, 51%)
CMYK	cmyk(34.1%, 83.7%, 0%, 49.4%)
CIE-LAB	lab(23.84, 47.16, -47.09)
CIE-LCH	lch(23.84, 66.64, 315.04°)
OKLab	oklab(36.51% 0.0983 -0.1341)
OKLCH	oklch(36.51% 0.166 306.2)
XYZ	xyz(7.9760, 4.0527, 21.1267)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.10

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551581 #418115

analogous

#1F1581 #551581 #811577

triadic

#551581 #815515 #158155

tetradic

#551581 #811F15 #418115 #157781

square

#551581 #811F15 #418115 #157781

split-complementary

#551581 #778115 #15811F

monochromatic

#11041A #320C4C #551581 #781EB6 #9833DE

Accessibility & contrast

On white

11.60

#551581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#551581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551581

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551581	#FFFFFF	#000000	##FFFFFF
##551581	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003784

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#4D324C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #551581;
/* rgb */ color: rgb(85, 21, 129);
/* oklch */ color: oklch(36.5% 0.166 306.2);

Tailwind

colors: {
  custom: {
    50: '#8a5ca6',
    500: '#551581',
    950: '#000000',
  },
}

SCSS

$custom: #551581;
$custom-light: #8a5ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#551581",
  "rgb": {
    "r": 85,
    "g": 21,
    "b": 129
  },
  "hsl": {
    "h": 275.556,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36506,
    "c": 0.16626,
    "h": 306.2
  },
  "luminance": 0.04053
}

Semantic roles & 50–950 ramp

primary

#551581

secondary

#6EB63C

accent

#EF3983

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C040F

muted

#7D797F

Preview Lab

Preview with #551581

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →